Suggestions by @automaniac14th

Sylvester McCoy

as Old Bilbo Baggins in The Lord of the Rings: The Return of the King (1995)

Cate Blanchett

as Éowyn in The Lord of the Rings: The Return of the King (1995)

Kate Winslet

as Arwen in The Lord of the Rings: The Return of the King (1995)

David Bowie

as Elrond in The Lord of the Rings: The Return of the King (1995)

Alexander Skarsgård

as Legolas in The Lord of the Rings: The Return of the King (1995)

Jemaine Clement

as Merry Brandybuck in The Lord of the Rings: The Return of the King (1995)

Warwick Davis

as Gimli in The Lord of the Rings: The Return of the King (1995)

Sean Astin

as Samwise Gamgee in The Lord of the Rings: The Return of the King (1995)

Jake Gyllenhaal

as Frodo Baggins in The Lord of the Rings: The Return of the King (1995)

Matthew Perry

as Ted Kennedy in American Crime Story: The Assassination of John F. Kennedy

Doug McKeon

as Senator Hubert Humphrey in American Crime Story: The Assassination of John F. Kennedy

Laurence Fishburne

as Thurgood Marshall in American Crime Story: The Assassination of John F. Kennedy